Concrete-block-molding machine



Sept. 18 1923.

H. E. \NILLIAMS CONCRETE BLOCK MOLDING MACHINE 1921 2 Sheets-Sheet 1Filed Au2:. 29

mamas Sept 18 1923.

H. E. WILLIAMS CONCRETE BLOCK MOLDING MACHINE Filed Aug. 29 1921 2Sheets-5heet 2 IIIWIIIM IL I 7/ 1 A 0 /]J .0 & l h x/ 0/ m J 0 w 1 aw? fm 0 m1 m J H 1 l V Manet HERBERT nnlvns rfwrnnreius. or AUCKLAND, newZEALAND.

oononn'rn-nnooiz ra01mins MACHINE.

Application filed August' 29, 1921. serial no. 496516.

To all whom it may c0ncernv Be known that l, llnnnn'nr ERNEST WIL-LIAMS, subject of the King of Great Britain, residing at DominionRoadpAuckland, in the Dominion of NewZea-land, haveinvented a'new anduseful Concrete-Block- Molding Machine, of which the following is aspecification.

This invention relates to a machine that has been devised for u'sein themolding of concrete building blocks or llke articles.

The construction-designed provides for the article being molded within amold hav ing an open top and bottom that is suspended to move up anddown within a supporting framework, in relationto'fixedverticalpillarsprojecting up into the open bottom of the moldwhich then engage and supporta false bottom forthe mold. forniedbv 20 apallet. When the mold is raised, the tops of these pillarssupport thepalletat about the bottom level of the moldso'that the mold may befilled with the concrete which will therefore rest on the pallet. Thenwhen the'mold is lowered, the'pillars passing relatively up-' wardsthrough the moldwill rai'se the pallet and article molded'thereon clearof the top ofthe mold so that it may be removed out-he pallet for dryingand curing.

The invention in one of its features/1elates to the special manner ofconstructing and operating these parts.

The machine is suitable for the molding of building blocks in pairs orhalf blocks and linkedtogether by tie wires extending transverselybetween them so that they may be used in the erection ofcavity walls.Other features in the. invention relate to special means embodied in theconstruction of the mould whereby 'tliesehalf blocks maybe formed andthe tie wires inserted in their places during the molding operations.

In lescrihingthe invention in its full details, it will therefore behereinafter described in relation to such- -'a construction and withspecial relation to the accon'ip'anying sheets of (:lrawings,'in-whichFigure 1 is a plan of two of the blocks,

for the molding of which the machine is designed, arranged in theirrelative positions to one another in the samefcourse." v

Figure 2 1s a front elevaton of the'co'mplete macliilie, part being insection.

Figure 3lS an end elevation of the ma chine.

. wheels F and F respectively near the top and bottom there- Figure 4 isa cross sectional plan ofthe same taken on the line 44 of F ignre 1.

plan taken on the Figure 8 isv a cross sectional elevation taken ontheline 88 of Figure 6.

In carryingout the invention, the mould box A is mounted within aframing B so that it maybe able to move freely up and down within it,being; provided with guides a. at each ofits four corners that fit uponthe four corresponding corner pillars of the framing; The mould box isthus maintained on the same level 'and' is held from i any lateralmovement in either direction in its movements up and down in the frame.

.r he mould box A 1s counterweighted by means of flexible chain or ropeconnections 0 extending upward from each of its two ends out overpulleys D, mounted in the framing B, and then loosely down and havingweights C fixed totheir loose ends. These together serve to balance themould so thatit may move freely up or down.

For actuating the mould A in this manner, the means shewn in thedrawings are provided. These consists in a sprocket chain 'E at each endof the mould that is fastened to the mould and encircles sprocketjournalled in the frame B of. The upper n of these sprocket wheels isfined uponv a COUl'ltQISllZLftlf that is geared with ashaft G by thechain and sprocket or like gearing G, extendmg across the width of theframe B, and having a hand wheel g on its end for turning it.- Theturning of'thls shaft will therefore move the mould up or down,xccordin; to the direction of turning. Fixed 11] the bottom of the frameare the vertically extending pillars H. These are made of, such a heightthat they are capable of projecting right up through the mould A whenthe mould is lowered to the bottom of the frame. They aremade also of*arying designs and suitably positioned to suit the nature of the insideshape of the mould In all cases however, they are adapted to supporta'pallet plate in ahorizontal position within the mould so that when themould has beenraised to the correct height such pallet plate will formthelbottomjof, the mould and will provide for the concrete materialbeing poured into and supported within the mould. Then when this hasset,.

the mould being lowered" by its operating means,w1ll cause the pillarsto move upwards relatlvely,

the topot' tlIGHlOHld so'that it may be'removed on thepallet fordry-ing. The mould maythenbe raised again,- a afresh pallet plateinserted and the molding operation repeated andso oni continuously, themachine providing :torlthe etlicient; and rapid moldings provision ismade .torthe molding of a ingot the blocksor articlesfor which themOLilCl is designed.

In theform of mould shewn'in the drawbloelrin two separate halves havingabutments extending inwards towards one another, as shewn in Figure 1.These halves are tiedtogether by tie wires a extending.

' across between thespacesprovided between the adjacent surfaces of suchabutments.

The mould A therefore has a core'piece of special design combined withit which ex.- tends throughout the full length. of the mould and dividesit into two halves, and is so constructed asto provide Ior the tie wires00 being placed in position and moulded into the double block thusformed. This core as inposition by stud bolts j, and formed withupwardly extending pillars Kat intervals apart in its length, that aremade hollow, as

shewn and extend upward to the top of the mould; These pillars arearranged with distances between them corresponding with the'widths ofthe abutments to be formed on the inside faces; of the half blocks.Their quired, spacesbetween them and the respective sides of themould,to form the body of the block members. In between thesepillars extendvfinsfthe thickness of which QcOrrespends with the distance between theabutmentsof the two half blocks of the complete block. Each of these'fins is made oftwo parts,'one of whichM is fixed to or formed in onewith the pillar, or the end of the mould, while the other M is loose andis 'made capable otsliding bodily intofthe hollow o'fthe adjacent pillaror mould end. The fins extend rmthe full height of the pillars, whichcorresponds with the height of the block to be moulded. The edge ofeach'inovable portion of the fin is notched as at m, at heightscorrespondingwithfthe desired positions of the tie wires so that a wiremay be laid across within each notch and held thereby the engagement ofthe 2 edge of such portion with the "fixed, portion. -The lower edge ofthis movable porthe area enclosed between "the mania casing therebyejecting the moulded block and holding itup clearrof shewi in thedrawingsare combined' therethe mould is raised toits upper position, the5 upwards into the mould spaces on each side It will I be readily seenthat; the formic f laid' withinthe mould,fsuch pallet being shaped inone'piece to fit wihin and cover 7' and the fixed portions otthecore,"so'th'at it extends also 'acrossthe spaces 7 left between thesefixed portions. ,lVhe'n'! thus the movable portions .M" "are withjdrawninto. the hollows of the. corepillars the palletjmg be placed in themould so that its cross pieces will reston. the bottomiblockld o thecore, and=tl1e portions-lyfi then moved-out. V above'ittocomplete thecore. Then when the bloc kha s been njioulded upoin. thepallet and'is tobe ejected from the mould along it with the pallet, these movableiportiens 'are again withdrawn into the hollow core pillars, leaving.the spaces 7 above them {free forthe cross pieces of the pallet to passrela tively upwards during the ejecting ,move-' [To actuate thesemovable fin portions M in the manner referred to,- the special meanswith. These consist lfor .eachjfinyin ajvertical bar 0 extendinglooselyupward in the hollow ofthe fadjacentscore pillar K, and

toggle levers P pivoted to such-bar and to the movablefin portion M and?the remote 'sur{ face of the pillar respectively, These toggle leversare so adjusted that an" upward lengthwise movement of the: bar willstraighten them. and forcethejfin portion out to the required extent,while a downthe hollow ot-the pillar.-; Theseveral bars O are thenpivotally connected at their lower ends to a single cross barrR-extend-T ing along'beneath the mould, that may be Thus in the operation i ofthe machine, f

core fin portions beingin the retired po si'; V tions, the pallet plateN is place'din position inthe bottom of. the mould,the-fin portions M rare then moved out, the tie wires a? beingplaced in the notches m :andthus.

held in position, and themould is ready to receive the concrete. :After;theconcrete filling has'set, the core fin portions'M are firstretired,=and the mould then lowered on to the fixed ejector pillars Hwhich pass of the core, and thereby engage the pallet. at intervals overits-whole area and support it squarely duringthe lowering-ct jthe mould.A clear draw is thus provided,ithe moulded blockibeing leftfl clearabove the lowered mould so that it may be removed. Toaid the draw ofthebloek, the mould and core'may .benadewith a very slight taper.

0 0 ward draw thereon, will draw it in within. V

05 lifted and lowered and thereby opei ate the V V bars simultaneously.widths are made'falso such as to leave the re mould and corer may bevaried at will to suit different natures and forms of articles tobe'moulded in the machine, thegeneral features of construction remainingthe same throughout;

I claim r 1. In a machine for usein molding concrete blocks a mouldformed by a casing and a core arranged to extend longitudinally withinsuch casing construct-ed of a block fixed to the casing and havin hollowpilla-rs extending, upward tllIOUJfil the casing I l at intervals 1n thelength thereof, and narrowed fin pieces extending between such pillarseach formed by a fixed portion and a movable portion mounted to projectfrom the adjacent pillar or to retire into such pillar, such movableportion having transversely extending notches at intervals in the heightof its edge adjacent to the fixed portion, and means whereby it may becaused and a core arranged to extend longitudi- 'nally within suchcasing constructed of a block fixed to the casing and having hollowpillars extending upward through the cusing at intervals in the lengththereof, and

narrowed fin pieces extending between such pillars each formed by afixed portion and a movable portion mounted to. project from theadjacent pillar or to retire into such pillar, and means, common to allof said movable fin pieces, to simultaneously oper ate said movable finpieces.

In testimony whereof, I afiix my signature. HERBERT ERNEST WILLIAMS.Witnesses:

DAVID BROWN HUTTON, WILLIAM HENRY MCCOMBIS.

